The culprit is what's known as a fume event, and it occurs when toxic fumes from jet engines make their way into the cockpit or cabin.
When you get on a plane, you know you run the risk of sitting next to a yapper, or you might encounter one of those sick freaks who goes to the bathroom barefoot. Heck, even though the odds of it happening are minuscule, you know there's even the sma... [8368 chars]